Each man above 18 years old is permitted to expend Viagra Online tablets. The item is planned and figured for men and they are entirely encouraged to not expend more than one measurements in a day. Viagra is figured with sildenafil citrate segment which is a PDE5 catalyst inhibitor. Men who are oversensitive to the segment is confined from devouring the item as there may be odds of having undesirable responses because of it. Essentially, the medicine is planned for men who are influenced by erectile dysfunction.